Adjustable drive for top and bottom drawing rolls of spinning frames



A. AMBYE 1,799,451

ADJUSTABLE DRIVE FOR TOP AND BOTTOM DRAWING ROLLS OF SPINNING FRAMESApril 7, 1931.

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ADJUSTABLE DRIVE FOR TQP AND BOTTOM DRAWING ROLLS 0F SPINNING FRAMESFiled April 22, 1930 2 Sheets-Sheet 2 I providea draft mechanism inwhich v v. -Fig. :2

Patented Apr. 7,1931

" fjU-N rsn STA ANTHon AMBYE, on Annovnn,

CHINE COMPANY, on NORTH MASSACHUSETTS Application filed April 22,

This invention relates tospinning frames and particularlyto the draftmechanism incorporated therein. The adjustment of the draft imposed uponthe roving as it is spun constitutes oneof the major factors indetermining the character of the yarn produced by such machines. Itfollows, therefore, that adjustment must be made at frequent intervals.It is highly desirable, therefore, that the means provided to accomplishthis adjustment be readily accessible and at the same time positiveand-accurate in its function. Y 9 y It is the general obj ectof thisinvention to provide such an adjustment having the desirablecharacteristics above suggested.

A specific object of the invention is to provide amechanism which issituated at a conv venient height and in' a plane" near the outer limitsof the space occupied by the machine.

The object of the inventioniis further to provide a draft mechanism inwhich a train of spur gears constitutes a connecting means between. thefeedanddraft rolls,

5 A furtherfobje t 0f the 'invention is 1to t 1c means for adjustmentthereof is rendered accessible by extending the cross shaft associatedwith the feed rolls to a point adjacent the'outer limits of the machine:

A further object of the invention is to'provide a draft adjusting devicewhich is simple j and compact in design and which maybe enclosed in aprotecting casing of small dimensions. i

- Other objects andfeatures will more fully appear from :the followingdescription in connection with the accompanying drawings and-will beparticularly pointed out in the claimsj v I Only those elements withwhich the invention is directly concerned are illustrated since theremaining elements may be constructed -in a manner well known'to thoseskilled in the party q In the drawings: v.Fig. 1 is a partial transversesection through a spinning frame embodying the invention.

frames of the machine.

the bracket 7; The shaft sidefview of a portion of one warn res. PATENT.OFFICE;

,MASSACHUSETTS, ASSIGNOR TonAvIs & Tonnes, MA-

.ennovnn, MASSACI-IUSETTS,,A conronATroN on I on SPINNING n'nnmns 1930.Serial No. 446,389.

end of a spinning frame showing the draft mechanism and thespeedchangingdevice.

The invention is particularly adapted to spinning frames'having two rowsof spindles, each row having associated therewith a feed roll and adraft roll to produce the necessary draft, and wherein the feed rollsassociated with each row are driven at the. same speed by a transverseshaft while the draft rolls for each row are driven at, the same speedby a separate transverse shaft. The speed ratio existing between thefeed rolls and the draft rolls is determined by a train of gearingconnecting the two transverse shafts. To varyithe draft one ofthe gearsof the; train is made; interchangeable with gears of differentdiameters. i

It is one-0f the features of the invention to place the train of gearingin an accessible position sothat the draft maybe readily changed. To dothis the transverse shafts above referred to'are extended to a point adjac ent the outer limits of the machine, at

which point the train of gearing is attached.

Since the transverse shafts are normally at a convenient heightabove thefloor it follows that if the train of gearing is situated at the ends oftheir extensions itis readily accessible to permit an operator to changethe draft. I

=As herein illustrated the mechanism for permitting adjustment of thedraft is mountwithin the casing 1 which is mounted on the end frame 2 ofthe machine. The rolls and 4t which are commonly calledthe'feed rollsfunction to supply roving to the mechanism from a suitable supply notshown. The feed rolls 3 and 4 extend throughout the length of themachine and are supported re I spectively insuitablebearings 5 and 6 se-7.1nounted on the usual cured to a bracket .longitudinal supportlngmembers 8 and 9 which are in turn supported from the end The feed rolls3 and ably supported in the bearings 11 and 12 on bevel gear 13 whichmeshes with a gearjl l on the feed r0113. Another gear 15 on the 10 hasthereon a suitable bearing in the bracket 18 which is. 'mounted on thelongitudinal support 19 and is supported at its other end in a suitablebear;-

ing in a bracket 20which is fixed to the longitudinal support 21. Thesupporting members 19 and 21 extend the full. length of the machine andare secured to the end frames thereof. A bevel gear-22 is fixed to oneend of the shaft 17 and meshes with a bevel gear 23 on the draft roll24' while'at the other end of the shaft 17 is secured a bevel gear 25which meshes with a bevel gear 26 on the draft roll 27. The bevel gearsabove described are so proportioned that the two draft rollsrot-at'e atthe same speed.

As above suggested a train of gearing is provided between the twotransverse shafts for determining the relative speed of the feed rolls 3and 4 andtheir'cooperating draft rolls 24' and 27. Inasmuch as theshafts 10 and 17 are parallel the gear train is desirably composed of aseries of spur gears which are of maximum efficiency in the transmissionof power. The shaft 10- is. extended at one; end to enter the casing 1and is rotatably" supported therein in" a bearing 28 formed in apartition wall 29 within the casing. Upon the extended end of the shaft10is mounted a driving gear 30 which is one element in the connectingtrain of gearing between the shaft 10 and the shaft 17. It will be notedthat by extending the shaft 10it is possible to locate the casing 1which encloses the gears in an accessible position near the outer limitsof the space occupied by the machine.

Adjacent the end of the shaft 17 is fixed a gear 31 which meshes with agear rotatably mounted on a stud shaft 33"fixedin the partition 29within the casing. The gear 32 serves to transmit the rotation of theshaft 17 to a shaft 34 through a gear 35 mounted on the shaft 34 andmeshing with the gear 32. The shaft" 34 is rotatably mounted ina bearingin a lever 36 which is pivoted upon the stud shaft 33. The lever 36 maybe moved thereforeabout its axis and at the same time maintain the gears32 and 35 in mesh. Detachably mounted on the shaft 33 is a change gear37 which meshes with the gear 20 on the'shaft 10.

The lever 36 i's'extended' to a point outside the casing 1 to form ahandle 38 and has therein adjacent the handle a locking bolt 39 whichextends through a slot 40 in the partition 29. The slot 40 is concentricwith the axis of the lever which permits movement thereof when r thebolt has been loosened. By tightening the bolt in the slot the lever isheld in fixed position to maintain the gear 37 in mesh with the gear20'. A positive drive is thus established between the shaft 17 and theshaft 10 progressively through the gears 31, 32, 35, 37 and 20.

If it is desired to change the draft a gear of the proper size mustbesubstituted for the gear 37. No definite order in whichto perfornithevarious movements necessary to do this need be followed. A desirablemethod is to first loosen the bolt 39 to free thel'ever 36, then thegear 37 is removed and the new gear substituted therefor. The lever isthen moved about its pivot until. the new gear properly meshes with thegear 30 after which the bolt 39. istightened to lock the gears in mesh.

The speed rolls and the draft rolls have herein been: referred to assingle rolls. l tis to be understood, however, that the-feed rolls haveassociated: therewith the usualpressure rolls 41 while the draft rollsare provided withcooperating pressureroli s 42.. Aproper biteis thusestablished at thefeed roll and at the draft rolls to draw the roving.

The mechanism may he driveninany suitable manner. A desirable method; isto extend the draftroll 24 intoth'eend frame2 and secure thereon a: gear43 which maybe directly connected to the jack shaft of themachine oranydriven element thereofi 7 Having thus described the inventiomwhat isclaimed as new, andidesire'd to" be secured by Letters Patents, is z:

1. In. a spinning frame, a casing located 'nearthe'outer limits ofthemachineirr aposrtion accessible to the. operator, twov longitudinally-extending feed rolls'at oppo'site si'des of the frame, atransverse shaft in driving engagement with both ofsaid: feed. rolls andextending into: said casing, a train ofigearin'g within thecasing,a gearon the-end. of said transverse shaft within the casing and in drivingengagement with one end of said gear train", two:longitudinally-extending draft rolls at opposite sides: of'the" frame, atransverse shaftiin'driving? engagement with both of said draft rolls, agear onsai'd lastnamed shaftin driving engagement, with the other end ofsaid gear train, an interchange.- able element in said train wherebythe? speed ratio of the feed rolls and the draft rolls may be changed toproduce the desired draftand meansto drive the mechanism.

2. In a spinning frame, two. longitudinallyextending' feed ro'l ls, twolongitudinal draft rolls co-operating therewith to draw the roving as itis spun, a transverse shaft in driving engagementwith both of said feedrolls, a second transverse shaft. in driving engagement with saiddraft'roll's, a driving gear on both of said transverse shafts, a trainof gearing connecting said transverse shafts, a lever pivoted on theaxis of one of the gears in the gear train, a pair of concentric gearsmounted to rotate together upon said lever and constituting a part ofsaid gear train, one

of the gears of said pair meshing with the gear in the pivotal axis ofthe lever and the other being interchangeable and positioned by movementof the lever into mesh with the driving gear on one of the saidtransverse shafts and means to lock the lever in position i to maintainthe gears in mesh.

3. In aspinning frame,two longitudinallyextendin feed rolls, twolongitudinally-extending draft rolls vco-operating therewith to draw theroving as it is spun, a casing located near the outer limits of themachine in a position accessible to the operator, a transverse shaft indriving engagement with said feed rolls extending into said casing, asee 0nd transverse shaft in driving engagement with said draft rolls, adriving gear on each of said transverse shafts, a train of gearingwithin the casing connecting said transverse shafts, a lever pivotedwithin the casing on the axis of one of the gears in the gear train, apair of concentric gears mounted to rotate together upon the lever andconstituting a part of the. gear train, one of said pair of gears beinginterchangeable and positioned by movement of the said lever into meshwith a driving gear on one of the transverseshafts, the other gear ofthe pair meshing at all y timeswith the gear on the shaft about whichthe lever pivots and means to lock the lever in adjusted position. i

In testimony whereof, I have signed my name to this specification.

ANTHON AMBYE.

